Bosch Evolution 300 Series Service Manual

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ERVICE

for

Bosch (YROXWLRQ

DQG Series

Free-standing Gas Ranges

Models

HGS3023UC, HGS3053UC, HGS3063UC, and

HGS5053UC

ANUAL

The information provided in this document is intended for trained,

qualified personnel only. The proper function and the safety of the

appliance can be affected by an improper repair, and even serious

threats to life or physical condition may arise. BSH Home Appliances

Corporation is not liable for damages caused by improper repairs

performed by unauthorized parties. Local codes and standards apply

and must be observed. Contact the Technical Support Team for

further assistance.

58300000146087 ARA EN A

Table of Contents

Summary of Contents for Bosch Evolution 300 Series

Page 1 ERVICE ANUAL Bosch (YROXWLRQ DQG Series Free-standing Gas Ranges The information provided in this document is intended for trained, qualified personnel only. The proper function and the safety of the appliance can be affected by an improper repair, and even serious threats to life or physical condition may arise.
Page 2 TABLE OF CONTENT6 2:24 (OHFWURQLF Oven &ontrol Module 1:1 GENERAL INFORMAT ION 2:24 Convection Fan Motor and Blade 1:1 Safe Servicing Practices - All Appliances 2:26 Oven Temperature Sensor 3URGXFW 2YHUYLHZ DQG )HDWXUHV 2:27 Oven Door Latch (OHFWURQLF 2YHQ &RQWURO 0RGXOH 2:29 Oven Door and Hinges 1:4 Model Number Information 2:29 Removing the Door...
Page 3: General Information
GENERAL INFORMATION Safe Servicing Practices - All Appliances To avoid personal injury and/or property damage, it is important that Safe Servicing Practices be observed. The following are some limited examples of safe practices: 1. DO NOT attempt a product repair if you have any doubts as to your ability to complete it in a safe and satisfactory manner. 2.
Page 4 PURGXFW OYHUYLHZ DQG )HDWXUHV Bosch 300 and 500 series freestanding gas ranges feature 500 Series sealed gas surface burners, continuous surface grates, self- cleaning oven, electronic oven control, wide view oven window, interior oven light, and a removeable storage drawer.
Page 5 Electronic Oven Control Module 300 Series (models without convection bake) The Bosch 300 series gas range uses an ES337 Hlectronic Rven control for all oven operations including Bake, Broil, Time Bake, Self-clean and Oven Lockout. The control module also features a countdown timer and interior oven light control key.
Page 6: Model Number Information
Examples are shown below. HGS3023UC HGS5053UC 2009 Bosch Evolution Series Free Standing Range (FSR) Data Tag Formats HGS3053UC The format of the data tags used on the following FSRs has changed since the HGS3063UC beginning of production for the following models: HGS3023UC +*68& +*68& +*68&...
Page 7: Gas Cooktop Operation
Gas Cooktop Operation Cooktop Conﬁguration and Burner Speciﬁcations 300 Series gas ranges are equipped with ﬁve sealed-type surface burners with electronic spark ignition. Surface burner sizes on the 300 series are 12,000 9500 (2) 5000 DQG 14,200 BTU. The illustration at right shows the cooktop layout, burner conﬁguration and BTU rating of each surface burner location.
Page 8 Gas Cooktop Operation Surface Burner Ignition Process The ignition process of the surface burners on the 300 series and 500 series ranges is identical. Each surface burner is independHntly operated and controlled by a gas valve attached to a common manifold pipe.
Page 9 Surface Burner Flame Characteristics A properly operating burner will have clean blue ﬂames with no yellow Photo % tipping, excessive noise or lifting away from the burner head. Photo B at right illustrates a typical ﬂame at high setting. Yellow ﬂames indicate improper fueltoair ratio and can be caused by improper gas pressure, improper conversion for use with LP gas or contaminated fuel supply.
Page 10 *DV 2YHQ 2SHUDWLRQ 2YHQ %XUQHU 6SHFLILFDWLRQV 300 and 500 Series ranges have identical bake and broil burner ratings as listed in the chart below. Note that the oven EDNH burnHr BTU rating LV decreased when the range is used on LP gas. (Natural / Liquid Propane) Gas Burner Ratings Bake Burner...
Page 11 2ven Burner Cycling Calibrating Oven / Temperature Offsets Oven performance can be customized to suit the preferences of the When a Bake cycle is programmed only the bake burner is used. (This individual consumer by programming a temperature offset into the includes the Preheat cycle.) control.
Page 12 Electronic Oven &ontrol Operation PowerUp Display When the appliance is ﬁrst plugged in, or when the power supply to the appliance has been interrupted, the display will ﬂash . To set the clock: 1. Press &/2&. once (do not hold pad down). 2.
Page 13 Relay and 3OXJ &RQQHFWLRQV RELAY AND PLUG CONNECTION LOCATIONS ON Temperature Sensor Operation and Testing 300 SERIES GAS RANGE CONTROLS The oven temperature is monitored by the Hlectronic Rven control through the Wemperature Vensor located inside the oven cavity. The sensor or RTD as it is sometimes called increases its resistance as the surrounding air temperature increases.
Page 14 SERVICING THE RANGE Surface Burners - 300 Series Ranges Photo A The surface burners on the 300 Series range are secured to the cooktop by two screws. Photo A at right shows the ﬁve burner model with grates removed and burner caps in place. To remove and replace any of the burners ﬁrst lift off the burner caps as Photo B seen in photo B.
Page 15 Oval Burner - 500 Series Ranges Photo A The surface burners on 500 series gas ranges are the same as those on the 300 series ranges with the exception of the center oval burner shown in photo A. This burner has a decorative cap that can be removed but is not a serviceable item.
Page 16 Photo C shows the oval burner removed from the range and the cap Photo C removed from the burner. The top plate on the burner can be removed by taking out the two Photo D screws seen in photo D from the underside of the burner. With the top plate sepDrated from the burner the interior of the burner and plate are accessible for cleaning in the event they should become clogged from boilovers or other types of food spills (Shoto E)...
Page 17 Surface Burner Oriﬁces With the surface burner removed the burner oriﬁce can be accessed for cleaning, replacement or for LP Fonversion. Oriﬁce The surface burner oriﬁce can be removed using a 7mm socket wrench or nut driver. Each oriﬁce has a retaining ring to help prevent the oriﬁce from falling out of the nut driver as it is being lifted out of the oriﬁce holder assembly.
Page 18 Cooktop Removal Photo A The cooktop must be removed to access the surface burner igniter oriﬁce holder assemblies, burner valves, spark module and other components. To remove the cooktop begin by removing the burner caps and surface burners as previously described. Next using a 1/4 inch socket wrench or nut driver remove the screws that secure each oriﬁce holder assembly to the cooktop.
Page 19 Carefully lift the cooktop aproximately 4 inches making sure that the Photo A oriﬁce holder assemblies are released from the top as seen in photo A. Pull the cooktop forward to disengage the rear edge from the tab of the chassis support bracket and lift it away from the range.
Page 20: Surface Burner Igniters
Surface Burner Igniters Photo C With the cooktop removed the oriﬁce holder assemblies and igniters are accessible as seen in photo C. The surface burner igniter is part of the oriﬁce holder assembly and is replaced as a complete unit. After removing the cooktop disconnect the gas line UXQQLQJ IURP the surface burner control valve to the oriﬁce holder assembly being replaced Photo D...
Page 21 Loosen the nut that secures the gas tube to the burner control valve Photo A as seen in photo A. The oriﬁce holder assembly and igniter can now be removed from the range. When replacing an oriﬁce holder assembly it is important to make sure that the nut is properly tightened to prevent gas leaks.
Page 22 From the underside of the manifold panel remove the two screws at the outside corners that secure the manifolG panel to the oven chassis SKRWR Photo D Screw Locations From the top side of the manifold panel, remove the screws which secure the two cooktop lock clips and remove the clips (photo E).
Page 23: Important Note
The switches slide over the burner valve shaftV and are secured by Photo A sockets on the back side of the switch that snap onto studs on the front side of the valve. Pull forward to unsnap the switch housing from the valve (Shoto A).
Page 24 Surface Igniter Spark Module Photo E To access the surface burner igniter spark module remove the surface burners and cooktop as described in the previous sections. The spark module is mounted onto a bracket located on the left side near the left rear burner as seen in photo E To access the module remove the two screws that fasten the bracket Photo F...
Page 25 Oven Bake Burner Photo A To access the oven bake burner ﬁrst remove the oven GRRU VHH 2YHQ 'RRU DQG +LQJHV 1H[W UHPRYH WKH WZR VFUHZV LQGLFated by the arrows in photo A. If the range has a convection fan UHPRYH WKH convection IDQ EDIIOHFRYHU Photo B RQ WKH UHDU ZDOO RI WKH RYHQ FDYLW\ Lift the rear edge of the oven bottom SDQHO upZDUG about 3 inches and...
Page 26 The bake burner and igniter assembly DUH held in position by the two Photo D screws indicated by the arrows in photo D. Prior to removing the bake burner you must ﬁrst unplug the bake burner igniter wire harness plug connector. To access this connector remove the lower drawer.
Page 27 Bake Burner Igniter 7R DFFHVV WKH EDNH EXUQHU LJQLWHU ILUVW IROORZ WKH VWHSV LQ WKH 2YHQ %DNH %XUQHU VHFWLRQ 7R GLVFRQQHFW WKH LJQLWHU IURP WKH EDNH EXUQHU UHPRYH the two screws indicated in photo A Photo A A closeup view of the bake burner igniter and harness can be seen in photo B.
Page 28: Oven Broil Burner
Oven Broil Burner The broil burner is attached to the ﬂame spreader and mounted to the ceiling of the oven cavity by ﬁve screws indicated by the arrows in photo D To remove the broil burner take out the ﬁve screws, slide the assembly to the left to disengage the burner tube from the oriﬁce spud and pull it forward out of the oven FDYLW\.
Page 29 Broil Burner Igniter To remove and replace the broil burner igniter VOLGH UDQJH DZD\ IURP WKH Harness ZDOO DQG UHPRYH the lower rear panel. Unplug the igniter harness Connector connector DV VKRZQ in photo A. Photo A Remove the two screws indicated by the arrows in photo B. Carefully pull the igniter and attached harness forward out of the oven cavity.
Page 30 Pressure Regulator Incoming Gas Supply A single pressure regulator is used to control gas pressure to the bake, broil and surface burners. The regulator is mounted RQ the left rear corner of the range as seen in photo D. The incoming gas supply line is connected to the regulator opening indicated by the arrow in the photo.
Page 31 Surface Burner Flame Adjustment Photo A A properly operating burner will have clean blue ﬂames with no yellow tipping, excessive noise or lifting away from the burner head. Photo A illustrates a typical ﬂame at high setting. Yellow ﬂames indicate improper fueltoair ratio and can be caused by improper gas pressure, improper conversion for use with LP gas or contaminated fuel supply.
Page 32 Oven Burner Flame Adjustment Illustration A The approximate ﬂame length of the oven burnerV should be 1 inch with a distinct inner blue ﬂame. %DNH %XUQHU To determine if the oven bake burner ﬂame is proper, remove the oven bottom SDQHO and burner bafﬂe LOOXVWUDWLRQ $ and set the oven to %ake at 300°F.
Page 33: Gas Setting
Conversion from Natural Gas 1* to LLTXLILHG PHWUROHXP/3 Gas All models of the Bosch 300 and 500 Veries gas ranges can be converted for use with LP Jas. The required LP conversion kit includes detailed instructions for conversion including surface burner oriﬁce size charts.
Page 34 E CONVERTING STEEL TOP REGULATOR: If the regulator has a steel top as pictured in IigXUH 4 on the previous page convert the FigXUH 5 FigXUH 8 FigXUH 6 regulator in the following manner: Dust Protector Remove the regulator access cover if equipped. Do not remove the Sressure Uegulator or allow it to turn.
Page 35 C219(57,1* 29(1 %$.( %851(5 25,),&( $. Locate the oven burner spud (ILJXUH 19). % Using a 1/2" wrench, turn down the adjustable spud which injects gas into FigXUH 19 the oven burner, until snug against the LP/Propane metering pin. Do not over tighten.
Page 36 7. A'-867,1* 7+( %$.( %851(5 $,5 6+877(5 FigXUH 22 The air shutter for the oven EDNH burner may need adjustment, especially if the unit has been converted for use with LP/Propane gas. The approximate ﬂame length of the oven burner is 1 inch (distinct inner, blue ﬂame) (Vee IigXUH 22). $ To access the air shutter UHmove the storage drawer or warmer drawer % Remove the oven bottom SDQHO by removing the screws at rear of oven bottom.
Page 37 (OHFWURQLF Oven &ontrol Module ,03257$17 2YHU RI HOHFWURQLF FRQWURO PRGXOHV UHWXUQHG WR WKH IDFWRU\ WHVW JRRG 3OHDVH SHUIRUP DOO GLDJQRVWLF WHVWV EHIRUH UHSODFLQJ FRQWURO The Rven control Podule is accessed by removing the shield that covers the rear of the control panel backguard. The control module is secured to the control panel by four screws indicated by the arrows in photo A Photo A To remove the control ﬁrst disconnect the wiring harness connector by...
Page 38 To remove the fan blade hold it securely while turning the retaining nut clockwise to loosen Shoto D Photo D Turn Nut Remove the nut and blade from the motor shaft. Clockwise To Remove 7R DFFHVV WKH FRQYHFWLRQ IDQ PRWRU VOLGH WKH UDQJH DZD\ IURP WKH ZDOO Photo E DQG removH the lower wire cover.
Page 39: Oven Temperature Sensor
Oven Temperature Sensor 57' Photo A The oven temperature sensor reacts to ambient temperature changes. At room temperature the sensor resistance will measure approximately 1090 ohms. As the surrounding air temperature rises the resistance of the sensor rises. To test the sensor it is recommended to make the initial test at the control module harness connector plug Harness Disconnect the plug from the control module and use an ohmmeter to...
Page 40: Oven Door Latch
To access the sensor remove the lower wire shield on the back of the Photo B range. The sensor is located on the right hand side just above the oven light socket as seen in photo B It is not necessary to remove the sensor from the range to test it.
Page 41 The latch motor assembly includes a microswitch that is activated by the motor cam to signal the latch hook position to the control module Mounting Screws (Shoto A). This switch is referred to as the Lock Switch on the wiring diagram and schematic.
Page 42 Oven Door and Hinges Photo % Photo $ All components and parts of the Rven Goor assembly can be serviced or replaced. The door is not available as a complete assembly. Removing the Door Open the door fully and pull both hinge locks down until they stop (Shotos $ &...
Page 43 *UDVSLQJ WKH GRRU ILUPO\ RQ ERWK VLGHV continue closing the GRRU WR GLVHQJDJH WKH Photo A hinges from the receivers (Shoto A) When the door is about 4 inches away from being completely closed it Photo B can be lifted off the range (Shoto B) Reinstalling the Door 7R reinstall the door reverse the previous steps.
Page 44 6HUYLFLQJ WKH 'RRU Photo $ To service or replace the door components remove the door as previously described and place the door on a protected work surface with the handle down and hanging off the edge. Begin disassembly by loosening the two screws ZKLFK secure the handle to the door assembly (Shoto $).
Page 45 To remove the door hinge lay the door liner assembly on a protected Photo ' work surface with the side of the door overhanging as seen in photo '. Remove the two hinge mounting screws indicated by the arrows in the photo.
Page 46 Remove the remaining screws that secure the wool shield to the liner Photo * assembly and lift the shield away from the liner (Shoto *). CAUTION: Wear gloves whenever handling insulation. Photo + 1RWH When reinstalling the wool shield be sure that the bottom edge of WOOL SHIELD the shield is nested under the upturned edge of the porcelain door liner Shoto +)...
Page 47 Lift out the two inner door glass panels and spacer as seen in Photo - Shoto -. This leaves only the porcelain door liner with door gasket still Photo . attached (Shoto .). Note that the end of the gasket passes through two holes aW the bottom of the liner.
Page 48 The gasket is secured to the liner by metal spring clips that can be Photo / pulled out from the opposite side Shoto /) Gasket Clip 1RWH %H sure to re-insert the loose ends of the gasket into the holes Photo 0 at the bottom of the door liner before reinstalling the inner door glass panes or insulation (Shoto 0)...
Page 49: Troubleshooting
TROUBLESHOOTING Electronic &ontrol 0RGXOH Failure/Fault Codes - ES337 When an error or failure occurs in the HOHFWURQLF Rven control Podule the control panel will usually produce an audible beep accompanied by a special display to indicate that there is a failure condition. The illustration to the right shows an oven control displaying the F11 error code (Stuck Keypad).
Page 50 Fault Codes From Tech Sheet Note: Fault codes are not a foolproof system. Never assume that a part has failed based on a displayed fault code. )RU example if the control module is displaying F30 (open sensor), the failure could be caused by a loose connection or faulty wire harness between the control module and sensor or the sensor could simply be unplugged.
Page 51 The fault codes in the Tech Sheet example on the previous page DUH H[SODLQHG LQ JUHDWHU GHWDLO EHORZ Note: Fault codes are not a foolproof system. Never assume that a part has failed based on a displayed fault code. )RU example if the control module is displaying F30 (2pen 6ensor), the failure could be caused by a loose connection or faulty wire harness between the control module and sensor or the sensor could simply be unplugged.
Page 52 F90, F91, F92, F93, F94 F90, F91, F92, F93, & F94 DUH displayed to indicate a failure of the oven F30 is displayed to indicate that the control module detects an open oven temperature sensor circiut. To troubleshoot this condition door locking or unlocking operation.
Page 53 7URXEOHVKRRWLQJ 7LSV • Verify proper power supply to range • Test for voltage to control module between L1 (black) & N (white) Electronic Oven &ontrol ,noperative/1o 'isplay wires in control module P5 harness connector. • If proper voltage is present but control module has no display replace the control module •...
Page 54 • Test continuity of lock motor windings and wiring harness connections Oven Door Lock Motor Does Not Operate • Check operation of oven door switch contacts • Test for 120 volts output from control module P5 harness connector pin 6 (Erown Zire) & pin 5 (Zhite Zire) •...
Page 55 (OHFWURQLF Control 0odule Troubleshooting and Testing it is possible to determine if *DV 5DQJH CLUFXLW 7HVW 0DWUL[ Using the the control module is sendng proper voltage to a speciﬁc component. Gas Range Circuit Test Matrix - ES337 If the proper voltage is not detected then the control module is defective L1 to L1 to Door...
Page 56 Gas Range Component Testing If a component part that is controlled by the control module fails to GAS Range Component Resistance Chart operate the cause could be due to a defect in the control module, NOTE: Resistance measurments are approximate. Variations due to faulty wiring harness connections , or the nonfunctioning component.
Page 57 For additional assistance, please contact the Bosch Technical Support Team (800) 444-9091 Visit QuickFinder at http://portal.mch.bshg.com/portal Service videos are available at www.bsh-digitaltoolbox.com BSH Home Appliances Corporation 5551 McFadden Avenue, Huntington Beach, CA 5830000014 ARA EN A...

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